CN215234223U - Self-cleaning type kneading reactor - Google Patents

Abstract

The utility model discloses a reactor is mediated to automatically cleaning type, including barrel (7) and two stirring rotor (5) of parallel arrangement in pairs in barrel (7) inner chamber, be provided with impeller (6) that are the heliciform and distribute according to the preface staggered arrangement on stirring rotor (5), and adjacent impeller (6) dislocation set on two stirring rotor (5), make E type scraper on the adjacent impeller (6) on two stirring rotor (5) can intermeshing, intermeshing's E type scraper can clear up the adhesion on E type scraper, on the rotor wall of stirring rotor (5) and the high viscous fluid on the inner wall of barrel (7). The utility model discloses a E type scraper is rotating in-process intermeshing, scraping mutually, and produced dynamic profile line has ensured no dead angle in the equipment among the rotatory in-process of birotor, can accomplish that the barrel inner chamber total reaction region scrapes and sweep, no blind spot, and the shearing distribution is more even moreover, mixing efficiency is higher, the reaction energy consumption is lower, is applicable to the large-scale device of industry.

Description

Self-cleaning type kneading reactor

Technical Field

The utility model belongs to the technical field of high viscous polymer production manufacture equipment technique and specifically relates to an axial propulsion performance is good, can carry out high-efficient mixing and can realize self-cleaning's automatically cleaning type kneading reactor to the result.

Background

For the high-viscosity polymerization reaction process, the viscosity of the system at the later stage of the reaction is continuously increased along with the progress of the reaction, and the viscosity of the system at the later stage of the reaction can finally even reach hundreds of thousands of millipascal seconds, at this time, the flowing of the materials becomes extremely difficult, and for high-boiling-point materials, especially heavy tar or phenol tar, coal tar, high polymer and the like which have the characteristics of high viscosity, high freezing point and high heat sensitivity, foaming or swelling at high temperature usually occurs, and some phenomena even rheological solidification occur. For a conventional stirring reactor, due to the fact that the viscosity of materials is high, the temperature is high, the fluidity is poor, the materials are prone to caking in a reactor body, dead zones are formed, carbonization or expansion is caused, the local reaction temperature is too high, the molecular weight of a polymer is out of control, and operation cannot be carried out normally. Meanwhile, at high viscosity, the polymerization product often wraps the monomer and the catalyst, so that the interface in the system cannot be updated. Conventional stirred reactors have not been suitable for the final polycondensation process of polycondensation.

The kettle type stirring equipment has no effect on the technical process, and the main problems are that: along with the reduction of volatile components, the viscosity of the material is rapidly increased by hundreds of times or even thousands of times at a certain stage, the kettle type stirring equipment cannot exceed the limit, and finally, the vehicle is overloaded and stopped; the sticky materials are agglomerated or wrapped on the stirrer and the stirring rotor, the surface cannot be updated, and the evaporation area is reduced; the material is adhered to the inner wall of the kettle, and the heat transfer capacity is greatly reduced.

Likewise, twin screw extruders are commonly used for high viscosity polymer processing. In which the product is pressed against the wall of the container and friction is generated there. At this time, the screw side pushes the product, which is hindered by wall friction, in the conveying direction of the screw. However, the disadvantage is that the residence time is short and is not suitable for reactions with a slow reaction rate, while the feed rate increases quadratically with the increase in the screw diameter. If larger cartridges are to be constructed, a very small pitch is required to set a high degree of filling. This results in a rotor that is bulky and heavy, which severely limits the practical industrial application of the twin-screw extruder.

Therefore, it is necessary to develop a reactor which can well prevent the high-viscosity materials from adhering to the reactor and the kettle body, avoid dead zones and has controllable residence time.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems in the prior art, providing an axial propulsion performance is good, can carry out high-efficient mixing and can realize the clear automatically cleaning type kneading reactor of oneself to the result.

The utility model aims at solving through the following technical scheme:

a self-cleaning type kneading reactor comprises a cylinder body and a stirring rotor, and is characterized in that: be equipped with two stirring rotor that parallel arrangement in pairs in the barrel of "8" font cross-section, be provided with the impeller that is the heliciform and distributes according to the preface staggered arrangement on stirring rotor, and the adjacent impeller dislocation set on two stirring rotor for the E type scraper on the adjacent impeller on two stirring rotor can intermeshing, and intermeshing's E type scraper can clear up the adhesion on E type scraper, on stirring rotor's the rotor wall and the high viscous fluid on the inner wall of barrel.

The impeller comprises a blade disc, a plurality of v-shaped 21274is uniformly distributed on the peripheral side of the blade disc, the scraper blade is obliquely arranged relative to the blade disc and forms an E-shaped scraper together with the blade disc in the thickness direction.

The scraper blades are distributed on corresponding disc corners of the blade disc, the outer edges of the disc corners are arc surfaces, and the number of the disc corners is not less than three.

Any two adjacent disc corners are connected through a first convex connecting cambered surface, a short plane, a concave middle cambered surface, a long plane and a second convex connecting cambered surface which are connected in sequence, and the included angle between the short plane and the long plane is 90-135 ℃.

The degree of the central angle corresponding to the short plane is 6-15 degrees, and the degree of the central angle corresponding to the long plane is 30-80 degrees; and the ratio of the central angle degree corresponding to the long plane to the central angle degree corresponding to the short plane is inversely proportional to the number of the disc angles; the ratio of the length of the short plane to the length of the long plane is 1: 1.4-2.0.

The included angle between the vertical edge in the scraper blade shape and the central axis of the blade disc is 3-8 degrees, and the included angle between the projection line of any one of the two transverse edges in the scraper blade shape on the blade disc and the corresponding radial line on the blade disc is 6-10 degrees; the ratio of the thickness of the scraper blade to the thickness of the leaf disc is 1:1-1.2, and the ratio of the width of the transverse edge in the shape of the scraper blade to the thickness of the leaf disc is 1: 1-1.2.

The dislocation angle between any adjacent impellers on the same stirring rotor is 3-10 degrees.

The gaps between the adjacent surfaces of the mutually meshed E-shaped scrapers are 3-8 mm; the clearance between the outer edge of the E-shaped scraper of the impeller on one stirring rotor and the outer wall of the other stirring rotor is 3-8 mm; the clearance between the outer edge of the E-shaped scraper and the inner wall of the reaction cavity of the kneading and stirring area of the reactor is 3-8 mm.

The barrel is internally provided with a jacket heating mechanism, the stirring rotor is internally provided with an inner tube heating mechanism, the inner tube heating mechanism heats materials in the inner cavity of the barrel from inside to outside, and the jacket heating mechanism heats the materials in the inner cavity of the barrel from outside to inside.

The inner pipe heating mechanism comprises a heating medium input core pipe positioned on the central axis of the stirring rotor, a heating medium output sleeve is arranged on the outer side of the heating medium input core pipe, and the outlet end of the heating medium input core pipe is communicated with the heating medium output sleeve; the inlet of the heating medium input core pipe is communicated with the inner pipe heating medium input pipe, and the outlet of the heating medium output sleeve is communicated with the inner pipe heating medium output pipe.

The inner cavity of the impeller with the hollow structure is communicated with the heat medium output sleeve.

The jacket heating mechanism comprises a jacket arranged in the cylinder, and the bottom of the cylinder is provided with a jacket heat medium input pipe and a jacket heat medium output pipe which are communicated with the jacket; the lower part of the jacket is provided with a separation plate capable of separating the jacket, so that a flow channel in the jacket is blocked at the separation plate, the two sides of the separation plate are provided with guide plates capable of separating the inner cavity of the jacket into a plurality of cavities, one end of each guide plate is connected with the separation plate in a sealing manner, one end of each guide plate is provided with a notch, and the notches can be communicated with the cavities on the two sides of the guide plates.

The jacket heat medium input pipe and the jacket heat medium output pipe are positioned at two sides of the isolating plate, wherein the jacket heat medium input pipe is communicated with the cavity at one end of the jacket, the guide plate at the position of the jacket heat medium input pipe is connected with the isolating plate in a sealing way, the jacket heat medium output pipe is communicated with the cavity at the other end of the jacket, and the guide plate at the position of the jacket heat medium output pipe is connected with the isolating plate in a sealing way.

Compared with the prior art, the utility model has the following advantages:

the utility model discloses a horizontal birotor self-cleaning type kneading reactor's E type scraper meshes each other, scrapes each other in the rotation process, the produced dynamic contour line of birotor rotation in-process has guaranteed that there is not the dead angle in the equipment, self-cleaning effect promptly, make the high viscous fluid that adheres on E type scraper, on the rotor wall and on the barrel inner wall clear up fast, can be fine avoid high viscous material to adhere on kneading stirring rotor and reaction chamber inner wall, mixing efficiency has been improved, the appearance of blind spot has been avoided to a certain extent, simultaneously, the reaction space also greatly improves; compared with a traditional horizontal double-rotor reactor and a double-screw extruder, the full-reaction-area scraping and sweeping device can achieve the effects that the full-reaction area of the inner cavity of the cylinder body is scraped and no dead area exists, and is more uniform in shearing distribution, higher in mixing efficiency and low in reaction energy consumption, and is particularly suitable for large-scale industrial devices.

The utility model discloses a stirring rotor can promote the material (including high viscosity material) antedisplacement gradually again when providing powerful mixture, forms macroscopic plug flow reactor, and the E type scraper on the stirring rotor arranges according to the heliciform, and this kind of arrangement provides the motive force for the axial of high viscosity material is carried, and can prevent the backmixing of material, makes the flow of material in equipment be close to plug flow, can obtain narrow dwell time distribution, can improve the product quality when being used for the polycondensation, can improve when being used for taking off the wave effect; the stirring rotor has a strong self-cleaning effect, reduces heat-sensitive loss, improves heat transfer efficiency and mixing efficiency, reduces energy consumption, reduces waste discharge, and can ensure continuous, stable and safe operation of the system.

The utility model discloses a slope sets up the scraper blade on the leaf disc, and the axial upset of scraper blade relative leaf disc, radial torsion for the impeller structure that has E type scraper possesses the characteristics of flexible mediate, low shearing force, can make the material mix evenly when effectively preventing the material decomposition; and the shape of the blade disc is processed, so that the surface updating efficiency of an impeller structure formed by matching the shape of the blade disc with the E-shaped scraper is high, the separation of volatile components such as solvents, monomers and the like from high-viscosity polymers is facilitated, and the polymerization, drying and devolatilization effects are improved.

The utility model discloses a set up on kneading reactor and press from both sides cover heating mechanism and inner tube heating mechanism for inner tube heating mechanism heats and presss from both sides the material of cover heating mechanism outside-in to kneading reactor from inside to outside in kneading reactor, inside and outside concurrent heating has increased heating area, heating efficiency has been improved, it is more even also to make inside material temperature simultaneously, avoid pressing from both sides the interior low phenomenon of the interior low heat that the cover heating appears, thereby realize the even controllable heating of material, avoid carbonization or the expansion to lead to the phenomenon appearance that local reaction temperature is too high.

Drawings

FIG. 1 is a schematic structural view of a self-cleaning kneading reactor of the present invention;

FIG. 2 is a schematic view of a cross-sectional structure of a self-cleaning kneading reactor according to the present invention;

FIG. 3 is a schematic perspective view of the kneading and stirring rotor of the present invention;

FIG. 4 is a schematic plane structure diagram of the kneading and stirring rotor of the present invention;

FIG. 5 is a schematic cross-sectional structure view of the kneading and stirring rotor of the present invention;

FIG. 6 is a schematic structural view of a quadrangular bladed disk of the present invention;

FIG. 7 is a schematic view of the structure of a quadrangular impeller according to the present invention;

fig. 8 is a schematic structural view of the scraper blade of the present invention;

FIG. 9 is a schematic structural view of a pentagonal bladed disk of the present invention;

fig. 10 is a perspective view of a pentagonal impeller structure of the present invention;

FIG. 11 is a plan view of a pentagonal impeller structure of the present invention;

FIG. 12 is a schematic structural view of a heating system of the kneading reactor of the present invention;

fig. 13 is a partial sectional view of a planar structure of a jacket heating mechanism according to the present invention;

fig. 14 is a partial sectional view of a three-dimensional structure of a jacket heating mechanism according to the present invention.

Wherein: 1-leaf disc; 2-a doctor blade; 3-disc angle; 31-first connecting arc surface; 32-short plane; 33-middle arc; 34-long plane; 35-a second connecting cambered surface; 4, mounting a groove; 5-a stirring rotor; 6-an impeller; 7, a cylinder body; 10-jacket heating mechanism; 11-jacket; 12-jacket heat medium input pipe; 13-jacket heat medium output pipe; 14-a separator; 15-a die cavity; 16-a deflector; 17-a notch; 20-inner tube heating mechanism; 21-heat medium input core pipe; 22-heat medium output sleeve; 23-inner pipe heat medium input pipe; 24-inner pipe heat medium output pipe.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

As shown in fig. 1-5: a self-cleaning kneading reactor comprises a cylinder body 7 and stirring rotors 5, wherein two stirring rotors 5 which are arranged in parallel in pairs are arranged in the cylinder body 7 with an 8-shaped cross section, impellers 6 which are arranged in a staggered manner in sequence and distributed in a spiral manner are arranged on the stirring rotors 5, the dislocation angle between any adjacent impellers 6 on the same stirring rotor 5 is 3-10 degrees, and the adjacent impellers 6 on the two stirring rotors 5 are also arranged in a staggered manner (the dislocation angle between the impeller 6 of one stirring rotor 5 and the two adjacent impellers 6 on the other stirring rotor 5 is 1.5-5 degrees), so that E-shaped scrapers on the adjacent impellers 6 on the two stirring rotors 5 can be meshed with each other, and the meshed E-shaped scrapers can clean high-viscosity fluid adhered to the E-shaped scrapers, the rotor walls of the stirring rotors 5 and the inner wall of the cylinder body 7.

As shown in fig. 6-11, the impeller 6 on the stirring rotor 5 comprises a blade disc 1, a plurality of v-shaped scraper blades 2 are uniformly distributed on the peripheral side of the blade disc 1, the scraper blades 2 are distributed on corresponding disc corners 3 of the blade disc 1, the outer edges of at least three disc corners 3 uniformly distributed on the blade disc 1 are arc surfaces, so that the outer edges of the disc corners 3 are connected to form a circle, a mounting groove 4 is correspondingly arranged on any disc corner 3, and a v-shaped scraper blade 2 is fixedly mounted on each mounting groove 4 and directly embedded in the mounting groove 4 or welded according to requirements; the scraper blade 2 is obliquely arranged relative to the blade disc 1, specifically, an included angle between a vertical edge in the scraper blade 2 and a central axis of the blade disc 1 is 3-8 degrees, namely, the scraper blade 2 is twisted by 3-8 degrees by taking a radial line of the blade disc 1 as an axis, and the 21274of the scraper blade 2 is formed, an included angle between a projection line of any one of two transverse edges in the scraper blade disc 1 and a corresponding radial line on the blade disc 1 is 6-10 degrees, namely, the scraper blade 2 is turned by 6-10 degrees by taking the central axis of the blade disc 1 as an axis, and the scraper blade 2 in the shape and the blade disc 1 in the thickness direction form an E-shaped scraper.

As shown in fig. 7, 8, 10, and 11, in the above structure, the outer bottom surface of the doctor blade 2 is an arc surface that coincides with the outer edge of the disk corner 3 in the circumferential direction of the disk 1, and may be a flat surface as necessary; because the working strength of the doctor blade 2 is high, in the utility model, the doctor blade 2 is made of 304 steel, 304L steel and 316L steel, and HC276 (Hastelloy) is adopted in special cases; in addition, the thickness of the doctor blade 2 cannot be too low, the ratio of the thickness of the doctor blade 2 to the thickness of the vane wheel 1 is 1:1-1.2, the ratio of the width of the transverse edge in the shape of the doctor blade 2 to the thickness of the vane wheel 1 is 1: 1-1.2; the overall width or the length of the transverse edges of the doctor blade 2 is furthermore determined according to the particular application. In addition, when the blisk 1 can adopt a hollow disc, the disc thickness and the corresponding size of the blisk 1 need to be designed according to the temperature, the pressure and the heat exchange area of the medium.

As shown in fig. 6-11, any two adjacent disk corners 3 are connected by a convex first connecting arc surface 31, a short plane 32, a concave middle arc surface 33, a long plane 34, and a convex second connecting arc surface 35. In the structure, in order to improve the surface renewal efficiency of the impeller structure, facilitate the removal of volatile components such as solvent, monomer and the like from a high-viscosity polymer and increase the effects of polymerization, drying and devolatilization, the ratio of the length of the short plane 32 to the length of the long plane 34 is set to be 1: 1.4-2.0; the degree of the central angle corresponding to the short plane 32 is 6-15 degrees, the degree of the central angle corresponding to the long plane 34 is 30-80 degrees, and the ratio of the degree of the central angle corresponding to the long plane 34 to the degree of the central angle corresponding to the short plane 32 is inversely proportional to the number of the disc angles 3; the included angle between the short plane 32 and the long plane 34 is 90-135 ℃.

As shown in fig. 6 and 7, the blisk 1 adopts a disc with four disc angles 3, the degree of the central angle corresponding to the short plane 32 is 11 degrees, the degree of the central angle corresponding to the long plane 34 is 55 degrees, and the included angle between the short plane 32 and the long plane 34 is 125 degrees; the mounting grooves 4 are arranged on the disk corners 3, one' -21274is fixedly mounted on each mounting groove 4, and the scraper blade 2 is overturned by 10 degrees by taking the central axis of the blade disk 1 as an axis and is overturned by 5 degrees by taking the radial line of the blade disk 1 as an axis in a mode of being perpendicular to the blade disk 1 along the radial direction of the blade disk 1. As shown in fig. 9, 10 and 11, the blisk 1 is a disc with five disc angles 3, the number of central angles corresponding to the short planes 32 is 8 °, the number of central angles corresponding to the long planes 34 is 40 °, and an included angle between the short planes 32 and the long planes 34 is 110 ℃; the mounting grooves 4 are arranged on the disk corners 3, one' -21274is fixedly mounted on each mounting groove 4, and the scraper blade 2 is overturned by 7 degrees by taking the central axis of the blade disk 1 as an axis and is overturned by 3 degrees by taking the radial line of the blade disk 1 as an axis in a mode of being perpendicular to the blade disk 1 along the radial direction of the blade disk 1.

Taking the impeller 6 shown in fig. 7 or fig. 10 as an example, when the impeller 6 is installed on the stirring rotor 5, the whole impeller 6 has a helical angle along the axis, which can effectively make the material have a forward moving plug flow, and because the disk angle 3 of two adjacent blade disks 1 is equivalent to a blocking weir plate, the residence time of the material can be effectively controlled by changing the speed of the stirring rotor 5.

As shown in fig. 12 to 14, a jacket heating mechanism 100 is provided in the cylinder 7, and an inner tube heating mechanism 200 is provided in the stirring rotor 5, the inner tube heating mechanism 20 heats the material in the inner cavity of the cylinder 7 from inside to outside, and the jacket heating mechanism 10 heats the material in the inner cavity of the cylinder 7 from outside to inside. Wherein the inner pipe heating mechanism 200 comprises a heating medium input core pipe 21 positioned on the central axis of the stirring rotor 5, a heating medium output sleeve 22 is arranged on the outer side of the heating medium input core pipe 21, and the outlet end of the heating medium input core pipe 21 is communicated with the heating medium output sleeve 22; the inlet of the heating medium input core pipe 21 is communicated with the inner pipe heating medium input pipe 23, and the outlet of the heating medium output sleeve 22 is communicated with the inner pipe heating medium output pipe 24. When a larger heat exchange area is needed, the blade disc 1 on the stirring rotor 5 can be made into a hollow structure, and the inner cavity of the blade disc 1 is communicated with the heat medium output sleeve 22, so that the heat transfer area can be increased to the maximum extent, and the heat transfer efficiency can be improved. The jacket heating mechanism 100 comprises a jacket 11 arranged in the cylinder 5, and the bottom of the cylinder 5 is provided with a jacket heat medium input pipe 12 and a jacket heat medium output pipe 13 which are communicated with the jacket 11; the lower part of the jacket 11 is provided with a partition plate 14 capable of dividing the jacket 11, so that a flow channel in the jacket 11 is blocked at the partition plate 14, guide plates 16 capable of dividing an inner cavity of the jacket 11 into a plurality of cavities 15 are arranged on two sides of the partition plate 14, one end of each guide plate 16 is hermetically connected with the partition plate 14, one end of each guide plate is provided with a notch 17 with the partition plate 14, and the notches 17 can be communicated with the cavities 15 on two sides of the guide plate 16. Further, the jacket heat medium input pipe 12 and the jacket heat medium output pipe 13 are located on both sides of the partition plate 14, wherein the jacket heat medium input pipe 12 is communicated with the cavity 15 at one end of the jacket 11, the guide plate 16 at the position of the jacket heat medium input pipe 12 is hermetically connected with the partition plate 14, the jacket heat medium output pipe 13 is communicated with the cavity 15 at the other end of the jacket 11, and the guide plate 16 at the position of the jacket heat medium output pipe 13 is hermetically connected with the partition plate 14.

The utility model discloses a reactor is mediated to horizontal birotor automatically cleaning type during use, preferentially choose for use the barrel 7 in "8" font cross-section, in the barrel 7 of kneading the reactor, the clearance between each looks proximal surface between the E type scraper of intermeshing is 3mm ~ 8mm, the clearance between the outer fringe of the E type scraper of impeller 6 on the stirring rotor 5 and another stirring rotor 5's the outer wall is 3mm ~ 8mm, the clearance between the outer fringe of E type scraper and the inner wall of barrel 7 is 3mm ~ 8 mm. When the self-cleaning device is used, the E-shaped scrapers on the two stirring rotors 5 are meshed with each other, the two rotors rotate in the same direction and at a different speed, the common speed ratio is 4:5, the E-shaped scraper on one stirring rotor 5 can scrape the inner wall of the cylinder 7 for cleaning, and simultaneously clean the rotor wall on the other stirring rotor 5 and the corresponding part of the E-shaped scraper meshed with the rotor wall, and the dynamic contour lines generated in the rotating process of the two rotors ensure that no dead angle exists in the device, namely the self-cleaning effect is realized. In order to provide strong mixing and simultaneously push materials (including high-viscosity materials) to gradually move forwards to form a macroscopic plug flow reactor, the E-shaped scrapers on the stirring rotor 5 are arranged in a spiral shape, the arrangement mode provides driving force for the axial conveying of the high-viscosity materials and can prevent the back mixing of the materials, the flow of the materials in the equipment is close to plug flow, and narrow residence time distribution can be obtained; when the method is used for polycondensation, the product quality can be improved; when used for devolatilization, the devolatilization effect can be improved.

When the heating system is used, an external jacket heating mechanism 10 inputs heating media into corresponding cavities 15 through a jacket heating medium input pipe 12, smoothly passes through each cavity 15 under the matching of a guide plate 16 and a partition plate 14, and finally returns to a jacket heating medium output pipe 13 through a heating medium outlet; the stirring rotor 5 is a hollow sleeve rotor, and the heating medium enters the heating medium input core pipe 21 through the inner pipe heating medium input pipe 23 connected with the rotary joint at the end of the stirring rotor 5, continuously passes through the central channel to supply the heating medium to the inside, and finally returns to the inner pipe heating medium output pipe 24 through the heating medium output sleeve 22 to complete the circular heating. Through set up on kneading the reactor and press from both sides cover heating mechanism 10 and inner tube heating mechanism 20, make inner tube heating mechanism 20 heat the material in kneading the reactor from inside to outside and press from both sides cover heating mechanism 10 outside-in and heat the material in kneading the reactor, inside and outside concurrent heating has increased heating area, heating efficiency has been improved, it is more even also to make inside material temperature simultaneously, the interior low phenomenon of outer heat of avoiding pressing from both sides the cover heating appearance, thereby realize the even controllable heating of material, avoid carbonization or the phenomenon that the inflation leads to local reaction temperature too high to appear.

The utility model discloses a reactor is mediated to horizontal birotor automatically cleaning type can operate under the condition of coefficient of charge 60% ~ 70%, and industrialization device volume is from 100L ~ 10000L, and the heating area who corresponds is from 4m²～150m². When the device is used for experiments, the specification of the device is 10L-200L. The self-cleaning type kneading reactor has compact and attractive structure, large heat transfer volume per unit volume and high heat efficiency; the impeller 6 has special structure, good surface heat transfer self-cleaning effect and high heat transfer coefficient; the operation mode is multiple, and normal pressure operation and vacuum operation can be performed; the application range is wide, and the material is suitable for organic matters, inorganic matters, heat-sensitive materials, high-humidity and low-humidity granular materials or viscous materials.

The utility model discloses a reactor is mediated to horizontal birotor automatically cleaning type is particularly useful for high viscous material reaction technology, for example the concentration, the evaporation of viscidity material (paste), solvent recovery and drying, the mixing, the reaction of wet powder, the processing of high concentration slurry, polycondensation, bulk polymerization, solution polymerization, the polymer devolatilization, other have the process of phase transition (from liquid → slurry → paste → wet powder → dry powder).

The above embodiments are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical scheme according to the technical idea provided by the present invention all fall within the protection scope of the present invention; the technology not related to the utility model can be realized by the prior art.

Claims (13)

1. A self-cleaning type kneading reactor comprising a barrel (7) and two stirring rotors (5) arranged in parallel in pairs in the inner cavity of the barrel (7), characterized in that: stirring rotor (5) on be provided with impeller (6) that are the heliciform and distribute according to the preface staggered arrangement, and adjacent impeller (6) dislocation set on two stirring rotor (5) for E type scraper on the adjacent impeller (6) on two stirring rotor (5) can intermeshing, intermeshing's E type scraper can clear up the adhesion on E type scraper, on the rotor wall of stirring rotor (5) and the high viscous fluid on the inner wall of barrel (7).

2. A kneading reactor of a self-cleaning type as set forth in claim 1, characterized in that: the impeller (6) comprises a blade disc (1), a plurality of v-21274-shaped scraper blades (2) are uniformly distributed on the peripheral side of the blade disc (1), the scraper blades (2) are obliquely arranged relative to the blade disc (1), and the v-21274-shaped scraper blades (2) and the blade disc (1) in the thickness direction form an E-shaped scraper.

3. A kneading reactor of a self-cleaning type as set forth in claim 2, characterized in that: the scraper blades (2) are distributed on corresponding disc corners (3) of the blade disc (1), and the outer edges of the disc corners (3) are arc surfaces, and the number of the disc corners (3) is not less than three.

4. A kneading reactor of a self-cleaning type as set forth in claim 1, characterized in that: any two adjacent disc corners (3) are connected with each other through a convex first connecting arc surface (31), a short plane (32), a concave middle arc surface (33), a long plane (34) and a convex second connecting arc surface (35) which are connected in sequence, and the included angle between the short plane (32) and the long plane (34) is 90-135 ℃.

5. A kneading reactor of a self-cleaning type as set forth in claim 4, characterized in that: the degree of the central angle corresponding to the short plane (32) is 6-15 degrees, and the degree of the central angle corresponding to the long plane (34) is 30-80 degrees; and the ratio of the central angle degree corresponding to the long plane (34) to the central angle degree corresponding to the short plane (32) is inversely proportional to the number of the disc angles (3); the ratio of the length of the short plane (32) to the length of the long plane (34) is 1: 1.4-2.0.

6. A kneading reactor of a self-cleaning type as set forth in claim 2, characterized in that: the included angle between the vertical edge in the shape of the scraper blade (2) and the central axis of the blade disc (1) is 3-8 degrees, and the included angle between the projection line of any one of the two transverse edges in the shape of the scraper blade (2) on the blade disc (1) and the corresponding radial line on the blade disc (1) is 6-10 degrees; the ratio of the thickness of the scraper blade (2) to the thickness of the leaf disc (1) is 1:1-1.2, and the ratio of the width of the transverse edge in the shape of the scraper blade (2) to the thickness of the leaf disc (1) is 1: 1-1.2.

7. A kneading reactor of a self-cleaning type according to claim 1 or 2, characterized in that: the dislocation angle between any adjacent impellers (6) on the same stirring rotor (5) is 3-10 degrees.

8. A kneading reactor of a self-cleaning type according to claim 1 or 2, characterized in that: the gaps between the adjacent surfaces of the mutually meshed E-shaped scrapers are 3-8 mm; the clearance between the outer edge of the E-shaped scraper of the impeller (6) on one stirring rotor (5) and the outer wall of the other stirring rotor (5) is 3-8 mm; the clearance between the outer edge of the E-shaped scraper and the inner wall of the reaction cavity of the kneading and stirring area of the reactor is 3-8 mm.

9. A kneading reactor of a self-cleaning type as set forth in claim 1, characterized in that: the inner tube heating mechanism (20) is arranged in the barrel (7) and is used for heating materials in the inner cavity of the barrel (7) from inside to outside, and the jacket heating mechanism (10) is used for heating materials in the inner cavity of the barrel (7) from outside to inside.

10. A kneading reactor of a self-cleaning type as set forth in claim 9, characterized in that: the inner pipe heating mechanism (20) comprises a heating medium input core pipe (21) positioned on the central axis of the stirring rotor (5), a heating medium output sleeve (22) is arranged on the outer side of the heating medium input core pipe (21), and the outlet end of the heating medium input core pipe (21) is communicated with the heating medium output sleeve (22); the inlet of the heat medium input core pipe (21) is communicated with the inner pipe heat medium input pipe (23), and the outlet of the heat medium output sleeve (22) is communicated with the inner pipe heat medium output pipe (24).

11. A kneading reactor of a self-cleaning type as set forth in claim 10, characterized in that: the inner cavity of the impeller (6) with a hollow structure is communicated with the heat medium output sleeve (22).

12. A kneading reactor of a self-cleaning type as set forth in claim 9, characterized in that: the jacket heating mechanism (10) comprises a jacket (11) arranged in the cylinder body (7), and the bottom of the cylinder body (7) is provided with a jacket heat medium input pipe (12) and a jacket heat medium output pipe (13) which are communicated with the jacket (11); the lower part of the jacket (11) is provided with a partition plate (14) capable of dividing the jacket (11), so that a flow channel in the jacket (11) is blocked at the partition plate (14), guide plates (16) capable of dividing an inner cavity of the jacket (11) into a plurality of cavities (15) are arranged on two sides of the partition plate (14), one end of each guide plate (16) is hermetically connected with the partition plate (14), one end of each guide plate is provided with a notch (17) with the partition plate (14), and the notches (17) can be communicated with the cavities (15) on two sides of the guide plates (16).

13. A kneading reactor of a self-cleaning type as set forth in claim 12, characterized in that: the jacket heat medium input pipe (12) and the jacket heat medium output pipe (13) are positioned on two sides of the isolating plate (14), wherein the jacket heat medium input pipe (12) is communicated with a cavity (15) at one end of the jacket (11), a guide plate (16) at the position of the jacket heat medium input pipe (12) is hermetically connected with the isolating plate (14), the jacket heat medium output pipe (13) is communicated with the cavity (15) at the other end of the jacket (11), and the guide plate (16) at the position of the jacket heat medium output pipe (13) is hermetically connected with the isolating plate (14).

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